US20100330185A1 - Active ingredient formulations containing 2-thiazole-4yl-1h-benzoimidazol (thiaben-dazole or tbz) for the production of wpc - Google Patents

Active ingredient formulations containing 2-thiazole-4yl-1h-benzoimidazol (thiaben-dazole or tbz) for the production of wpc Download PDF

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US20100330185A1
US20100330185A1 US12/597,241 US59724108A US2010330185A1 US 20100330185 A1 US20100330185 A1 US 20100330185A1 US 59724108 A US59724108 A US 59724108A US 2010330185 A1 US2010330185 A1 US 2010330185A1
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weight
tbz
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biocidal
wood
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Inventor
Andreas Boettcher
Peter Spetmann
Martin Kugler
Thomas Jaetsch
Gerd-Friedrich Renner
Rolf Matysiak
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Lanxess Deutschland GmbH
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Lanxess Deutschland GmbH
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Assigned to LANXESS DEUTSCHLAND GMBH reassignment LANXESS DEUTSCHLAND GMBH ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: BOTTCHER, ANDREAS, KUGLER, MARTIN, RENNER, GERD-FRIEDRICH, MATYSIAK, ROLF, SPETMANN, PETER, JAETSCH, THOMAS
Publication of US20100330185A1 publication Critical patent/US20100330185A1/en
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Classifications

    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • A01N25/00—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests
    • A01N25/08—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests containing solids as carriers or diluents
    • A01N25/10—Macromolecular compounds
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • A01N47/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom not being member of a ring and having no bond to a carbon or hydrogen atom, e.g. derivatives of carbonic acid
    • A01N47/08—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom not being member of a ring and having no bond to a carbon or hydrogen atom, e.g. derivatives of carbonic acid the carbon atom having one or more single bonds to nitrogen atoms
    • A01N47/10—Carbamic acid derivatives, i.e. containing the group —O—CO—N<; Thio analogues thereof
    • A01N47/12—Carbamic acid derivatives, i.e. containing the group —O—CO—N<; Thio analogues thereof containing a —O—CO—N< group, or a thio analogue thereof, neither directly attached to a ring nor the nitrogen atom being a member of a heterocyclic ring
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • A01N43/00—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds
    • A01N43/72—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with nitrogen atoms and oxygen or sulfur atoms as ring hetero atoms
    • A01N43/74—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with nitrogen atoms and oxygen or sulfur atoms as ring hetero atoms five-membered rings with one nitrogen atom and either one oxygen atom or one sulfur atom in positions 1,3
    • A01N43/78—1,3-Thiazoles; Hydrogenated 1,3-thiazoles

Definitions

  • the present invention relates to the use of biocidal mixtures containing thiabendazole (TBZ) and 3-iodo-2-propinyl N-butylcarbamate (IPBC) for protecting composite materials comprising cellulose-containing materials (especially wood) and plastics (so-called wood-plastic composites, WPC) and to a process for the production of WPC as well as the biocidally treated WPC itself.
  • TBZ-containing compositions which have a proportion of borate (measured as B 2 O 3 ) of less than 0.1% by weight and corresponding WPC and the production thereof are described.
  • wood-discolouring fungi and fungi causing soft rot such as, for example, Ascomycetes and Deuteromycetes
  • wood-destroying fungi such as, for example, Basidiomycetes
  • WPC are also capable of absorbing amounts of water which are sufficient for fungal growth (W. Wang and J. J. Morell, Forest Products Journal, 2005, 54(12), 209-212) so that, in addition to the superficial attack, it is also to be assumed that deeper layers of the composite material will be at risk.
  • the appearance, aesthetics and haptic property are also responsible for the demand for WPC deckings, in particular the protection of the surface from attack by fungi is an important task.
  • the abovementioned lack of resistance of WPC to biological attack therefore makes the use of biocides unavoidable.
  • the homogeneous distribution of the biocide in the material is advantageous since every inner surface of the material can become an outer surface as a result of intentional mechanical processing (sawing, milling), as a result of wear caused by use and as a result of ageing (e.g. cracking).
  • the fungicide most recently used today in WPC is zinc borate (J. Simonsen et al., Holzaba [Wood Research], 2004, 58, 205-208), which however has a number of disadvantages.
  • zinc borate firstly has higher efficacy against wood-destroying fungi than against the moulds and blue-strain fungi which impede the surface.
  • zinc borate owing to its water solubility, zinc borate exhibits pronounced leaching. Consequently, relatively large amounts (2-10%; M. P. Wolcott et al., Forest Products Journal, 2002, 52(6), 21-27) of zinc borate are required for protecting the WPC, which also has a disadvantageous effect on the environment.
  • WO 2006/127649 describes partial replacements of inorganic biocides by selected organic active substances, but without being able to entirely dispense with the inorganic basis.
  • IPBC itself in combination with stabilizers (US-A-2006/0013847) or in combinations with the active substances ziram and/or thiram (US-A-2005/0049224) has already been described for WPC.
  • TBA Tetrabromobisphenol A
  • BIT 1,2-benzisothiazolin-3-one
  • WPC WPC
  • thiabendazole (TBZ below) has sufficient thermal stability and an excellent fungicidal action when used in WPC, the concomitant use of inorganic biocides, in particular borates, not being required.
  • the invention therefore relates to the use of a biocidal composition containing TBZ for protecting wood-plastic composites (WPC), containing thermoplastic polymer and wood particles, from attack and/or destruction by microorganisms, characterized in that the biocidal composition has a proportion of borate (measured as B 2 O 3 ) of less than 0.1% by weight, preferably of less than 0.05% by weight, in particular of less than 0.01% by weight.
  • WPC wood-plastic composites
  • Determination of the proportion of borate is preferably effected by atomic absorption spectroscopy (AAS).
  • AAS atomic absorption spectroscopy
  • wood particles are understood as meaning wood fibres, wood granules, wood flour or any other particulate form of wood.
  • the wood particles preferably have a particle size of less than 3 mm, in particular of less than 1.5 mm, particularly preferably of less than 1 mm
  • thermoplastic polymer is preferably understood as meaning PVC, PET, fluoropolymers, HDPE, LDPE, LLDPE, PP, HDPP, LDPP, WHMWPE, MPE or mixtures thereof.
  • the biocidal composition may also be used in combinations with further fungicides against wood-destroying Basidiomycetes and/or insecticides and/or algicides.
  • Fungicides effective against wood-destroying Basidiomycetes include, for example: azaconazole, azocyclotin, bitertanol, bromuconazole, cyproconazole, diclobutrazole, difenoconazole, diniconazole, epoxyconazole, etaconazole, fenbuconazole, fenchlorazole, fenethanil, fluquinconazole, flusilazole, flutriafol, furconazole, hexaconazole, imibenconazole, ipconazole, isozofos, myclobutanil, metconazole, paclobutrazol, penconazole, propioconazole, prothioconazole, simeoconazole, ( ⁇ )-cis-1-(4-chlorophenyl)-2-(1H-1,2,4-triazol-1-yl)cyclohepta-nol,
  • algicides acetochlor, acifluorfen, aclonifen, acrolein, alachlor, alloxydim, ametryn, amidosulfuron, amitrole, ammonium sulphamate, anilofos, asulam, atrazine, azafenidin, aziptrotryn, azimsulfuron, benazolin, benfluralin, benfuresate, bensulfuron, bensulphide, bentazone, benzofencap, benzthiazuron, bifenox, bispyribac, bispyribac sodium, borax, bromacil, bromobutide, bromofenoxim, bromoxynil, butachlor, butamifos, butralin, butylate, bialaphos, benzoyl-prop, bromobutide, butroxydim,
  • eglinazine endothal
  • EPTC esprocarb
  • ethalfluralin ethidimuron
  • ethofumesate ethobenzanide
  • ethoxyfen ethametsulfuron
  • ethoxysulfuron ethoxysulfuron
  • fenoxaprop fenoxaprop-P, fenuron, flamprop, flamprop-M, flazasulfuron, fluazifop, fluazifop-P, fuenachlor, fluchloralin, flufenacet, flumeturon, fluorocglycofen, fluoronitrofen, flupropanate, flurenol, fluridone, flurochloridone, fluroxypyr, fomesafen, fosamine, fosametine, flamprop-isopropyl, flamprop-isopropyl-L, flufenpyr, flumiclorac-pentyl, flumipropyn, flumioxzim, flurtamon, flumioxzim, flupyrsulfuron-methyl, fluthiacet-methyl,
  • imazamethabenz isoproturon, isoxaben, isoxapyrifop, imazapyr, imazaquin, imazethapyr, ioxynil, isopropalin, imazosulfuron, imazomox, isoxaflutole, imazapic,
  • MCPA MCPA-hydrazid, MCPA-thioethyl, MCPB, mecoprop, mecoprop P, mefenacet, mefluidide, mesosulfuron, metam, metamifop, metamitron, metazachlor, methabenzthiazuron, methazole, methoroptryne, methyldymron, methyl isothiocyanate, metobromuron, metoxuron, metribuzin, metsulfuron, molinate, monalide, monolinuron, MSMA, metolachlor, metosulam, metobenzuron,
  • naproanilide napropamide, naptalam, neburon, nicosulfuron, norflurazon, sodium chlorate,
  • prosulfocarb pyrazolate, pyrazosulfuron, pyrazoxyfen, pyribenzoxim, pyributicarb, pyridate, paraquat, pebulate, pendimethalin, pentachlorophenol, pentoxazone, pentanochlor, petroleum oils, phenmedipham, picloram, piperophos, pretilachlor, primisulfuron, prodiamine, profoxydim, prometryn, propachlor, propanil, propaquizafob, propazine, propham, propisochlor, pyriminobac-methyl, pelargonic acid, pyrithiobac, pyraflufen-ethyl,
  • tar oils TCA, TCA sodium, tebutam, tebuthiuron, terbacil, terbumeton, terbutylazine, terbutryn, thiazafluoron, thifensulfuron, thiobencarb, tiocarbazil, tralkoxydim, triallate, triasulfuron, tribenuron, triclopyr, tridiphane, trietazine, trifluralin, tycor, thiadiazimin, thiazopyr, triflusulfuron,
  • the algicides are very particularly preferably triazine compounds, such as, for example, terbutryn, cybutryn, propazine or terbuton, urea compounds, such as, for example, diuron, benzthiazuron, methabenzthiazuron, tebuthiuron and isoproturon, or uracils, such as terbacil.
  • triazine compounds such as, for example, terbutryn, cybutryn, propazine or terbuton
  • urea compounds such as, for example, diuron, benzthiazuron, methabenzthiazuron, tebuthiuron and isoproturon
  • uracils such as terbacil.
  • insectidal active subtances are suitable as insectidal active subtances:
  • organo(thio)phosphates such as acephate, azamethiphos, azinphos-methyl, chlorpy rifos, chlorpyriphos-methyl, chlorfenvinphos, diazinon, dichlorvos, dicrotophos, dimethoate, disulfoton, ethion, fenitrothion, fenthion, isoxathion, malathion, methamidophos, methidathion, methyl-parathion, mevinphos, monocrotophos, oxydemeton-methyl, paraoxon, parathion, phenthoate, phosalone, phosmet, phosphamidon, phorate, phoxim, pirimiphos-methyl, profenofos, prothiofos, sulprophos, triazophos, trichlorfon;
  • carbamates such as alanycarb, benfuracarb, bendiocarb, carbaryl, carbosulfan, fenoxycarb, furathiocarb, indoxacarb, methiocarb, methomyl, oxamyl, pirimicarb, propoxur, thiodicarb, triazamate;
  • pyrethroids such as allethrin, bifenthrin, cyfluthrin, cyphenothrin, cypermethrin and the alpha-, beta-, theta- and zeta-isomers, deltamethrin, esfenvalerate, ethofenprox, fenpropathrin, fenvalerate, cyhalothrin, lambda-cyhalothrin, imiprothrin, permethrin, prallethrin, pyrethrin I, pyrethrin II, silafluofen, tau fluvalinate, tefluthrin, tetramethrin, tralomethrin, transfluthrin, zeta-cypermethrin;
  • Arthropod growth regulators such as a) chitin synthesis inhibitors; e.g. benzoylureas, such as chlorfluazuron, cyromazine, diflubenzuron, flucycioxuron, flu fenoxuron, hexaflumuron, lufenuron, novaluron, teflubenzuron, tritlumuron; buprofezin, diofenolan, hexythiazox, etoxazole, clofentazine; b) ecdyson antagonists, such as halofenozide, methoxyfenozide, tebufenozide; c) juvenoids, such as pyriproxyfen, methoprene, fenoxycarb; d) lipid biosynthesis inhibitors, such as spirodiclofen;
  • chitin synthesis inhibitors e.g. benzoyl
  • Neonicotinoids such as flonicamid, clothianidin, dinotefuran, imidacioprid, thiamethoxam, nitenpyram, nithiazine, acetamiprid, thiacioprid;
  • pyrazole insectides such as acetoprole, ethiprole, fipronil, tebufenpyrad, tolfenpyrad and vaniliprole.
  • Hymenoptera Formicidae, such as Camponotus abdominalis, Laslus flavus, Lasius brunneus, Laslus fuliginosus;
  • Calotermitidae such as Calotermes flavicollis, Cryptothermes brevis
  • Hodotermitidae such as Zootermopsis angusticollis, Zootermopsis nevadensis
  • Rhinotermitidae such as Reticulitermes flavipes, Reticulitermes lucifugus, Coptoter mes formosanus, Coptotermes acinaciformis
  • Mastotermitidae such as Mastotermes darwiniensis.
  • insecticidal active substances from the class consisting of the pyrethroids, arthropod growth regulators, such as chitin biosynthesis inhibitors, ecdysone antagonists, juvenoids, lipid biosynthesis inhibitors, neonicotinoids, pyrazole insecticides and chlorfenapyr.
  • arthropod growth regulators such as chitin biosynthesis inhibitors, ecdysone antagonists, juvenoids, lipid biosynthesis inhibitors, neonicotinoids, pyrazole insecticides and chlorfenapyr.
  • insecticidal active substances of the group consisting of the neonicotinoids and pyrethroids are preferred and insecticidal active substances of the group consisting of the neonicotinoids are very particularly preferred.
  • the biocidal composition used according to the invention preferably contains a lubricant.
  • a preferred lubricant which may be mentioned is at least one from the group consisting of the polymers (fluoropolymers, HDPE, LDPE, LLDPE, PP, HDPP, LDPP, WHMWPE, MPE), alkaline earth metal stearates, metal soaps, pyrogenic silicas and Zn stearate, having a content of up to 3% by weight, preferably up to 2.5% by weight and very particularly preferably up to 2% by weight, based on the biocidal composition.
  • the polymers fluoropolymers, HDPE, LDPE, LLDPE, PP, HDPP, LDPP, WHMWPE, MPE
  • alkaline earth metal stearates metal soaps
  • pyrogenic silicas and Zn stearate having a content of up to 3% by weight, preferably up to 2.5% by weight and very particularly preferably up to 2% by weight, based on the biocidal composition.
  • biocidal composition consists of more than 90% by weight, preferably more than 95% by weight, of TBZ and optionally further biocidal active substances and lubricant is preferred.
  • biocidal composition is more than 90% by weight, preferably more than 95% by weight, of TBZ and lubricant is particularly preferred.
  • the biocidal composition additionally contains a conductivity improver (e.g. graphite) with a content of up to 5% by weight, preferably with a content of up to 3% by weight and very particularly preferably with a content of up to 2.5% by weight.
  • a conductivity improver e.g. graphite
  • the biocidal composition used is preferably present as a particulate solid preparation or in the form of a solution or dispersion of the biocidal composition in a polymer matrix (masterbatch) below.
  • the particulate solid preparation may be present as powder or granules. It is preferably present in a freely flowable form.
  • the primary particles of the solid preparation preferably have a particle size of not more than 500 ⁇ m, preferably less than 100 ⁇ m, very particularly preferably less than 50 ⁇ m.
  • the solid preparation preferably has a mean particle size, determined from the mass distribution, of 50 to 5000 ⁇ m, preferably 100 to 2000 ⁇ m, in particular 100 to 500 ⁇ m.
  • the preferably used solid preparations are themselves likewise a subject of the invention. They are furthermore characterized in that they have a proportion of borate (measured as B 2 O 3 ) of less than 0.1% by weight, in particular less than 0.05% by weight.
  • the masterbatch is preferably characterized by a polymer, preferably one selected from the group consisting of PVC, PET, fluoropolymer, HDPE, LDPE, LLDPE, PP, HDPP, LDPP, WHMWPE, MPE or a mixture thereof and TBZ, optionally lubricant and optionally further active substances and optionally further additives, the masterbatches, too, having a proportion of borate (measured as B 2 O 3 ) of less than 0.1% by weight, in particular of less than 0.05% by weight.
  • a polymer preferably one selected from the group consisting of PVC, PET, fluoropolymer, HDPE, LDPE, LLDPE, PP, HDPP, LDPP, WHMWPE, MPE or a mixture thereof and TBZ, optionally lubricant and optionally further active substances and optionally further additives, the masterbatches, too, having a proportion of borate (measured as B 2 O 3 ) of less than 0.1% by weight,
  • the masterbatch itself is also a subject of the invention and preferably contains from 20 to 99% by weight of polymer, in particular 40 to 70% by weight, and 1 to 80% by weight of TBZ, in particular 30 to 60% by weight.
  • the invention furthermore relates to a process for the preparation of the masterbatch according to the invention, which is characterized in that a) a polymer and a biocidal composition containing TBZ are mixed or extruded together or
  • the polymer swollen in a solvent is mixed with a solution of the biocidal composition containing TBZ, and the solvents of the common mixture are separated off, preferably by distillation.
  • Route a) is preferably effected by compounding and extrusion of biocidal compositions, for example of the solid preparations described above, in polymers, such as for example, PET, PVC, fluoropolymers, HDPE, LDPE, LLDPE, PP, HDPP, LDPP, WHMWPE, MPE and mixtures thereof, the active substances present preferably having a content of up to 60% by weight, preferably of up to 50% by weight, in particular of up to 40% by weight, based on the masterbatch.
  • polymers such as for example, PET, PVC, fluoropolymers, HDPE, LDPE, LLDPE, PP, HDPP, LDPP, WHMWPE, MPE and mixtures thereof
  • the active substances present preferably having a content of up to 60% by weight, preferably of up to 50% by weight, in particular of up to 40% by weight, based on the masterbatch.
  • Route b) is preferably effected by incorporation of solutions of the biocidal compositions, in particular of the solid preparations described above, into preswollen polymers, such as, for example, PET, PVC, fluoropolymers, HDPE, LDPE, LLDPE, PP, HDPP, LDPP, WHMWPE, MPE or mixtures thereof, and subsequent removal, in particular stripping, of the solvents.
  • preswollen polymers such as, for example, PET, PVC, fluoropolymers, HDPE, LDPE, LLDPE, PP, HDPP, LDPP, WHMWPE, MPE or mixtures thereof, and subsequent removal, in particular stripping, of the solvents.
  • the invention furthermore relates to a process for the production of a wood-plastic composite (WPC), characterized in that wood particles, a thermoplastic polymer and a biocidal composition containing TBZ are mixed with thermal energy, in particular extruded or injection moulded, characterized in that the composition has a proportion of borate (measured as B 2 O 3 ) of less than 0.1% by weight, in particular less than 0.05% by weight, especially less than 0.01% by weight.
  • WPC wood-plastic composite
  • the two-stage processes derived from plastic technology are preferably used for the production of water-plastic composites.
  • preferably granules of thermoplastic polymer, wood and various additives as already described above are first produced by, for example, using heating-cooling mixers and then processed to give the actual shaped articles, for example by extrusion or injection moulding.
  • the temperatures of 120 to 300° C. which are usually used for the thermoplastic polymers used are preferably applied during the thermal mixing, in particular the extrusion or the injection moulding.
  • biocidal composition can be effected in the course of different production steps of a WPC.
  • biocidal compositions are added in the course of the compounding of wood particles and thermoplastic polymer, for example in the heating-cooling mixer.
  • the biocidal compositions are mixed with the wood fibres or the wood granules or the wood flour before the compounding of wood particles, e.g. wood fibres, and thermoplastic polymer or mixed with the plastic granules before the compounding of wood particles and thermoplastic polymer.
  • the biocidal compositions are converted into solutions, emulsions, suspensions or suspoemulsions by using suitable solvents and formulation auxiliaries, e.g. emulsifiers, and the wood particles to be compounded with the thermoplastic polymer are treated with these, for example by spraying on or impregnation, and these optionally dried.
  • suitable solvents and formulation auxiliaries e.g. emulsifiers
  • thermoplastic polymer e.g. PE, PP, PET, HDPE, HDPP, PVC
  • 28 to 70% by weight of wood particles and 0.05 to 2% by weight, preferably 0.1 to 0.5% by weight, of the biocidal composition and optionally further additives are used for the production.
  • the invention furthermore relates to wood-plastic composites (WPC) containing thermoplastic polymer and wood particles, characterized in that it contains TBZ and a proportion of borate (measured as B 2 O 3 ) of less than 0.1% by weight, in particular less than 0.05% by weight, in particular less than 0.01% by weight.
  • WPC wood-plastic composites
  • the WPC according to the invention may contain further additives, for example from the group consisting of the adhesion promoters, lubricants, UV stabilizers, antioxidants, pigments, flameproofing agents, conductivity improvers, plastic stabilizers, the above proviso with regard to the proportion of borate of course being applicable.
  • the invention furthermore relates to the use of a biocidal mixture containing IPBC and TBZ, for protecting wood-plastic composites (WPC), containing thermoplastic polymer and wood particles, for attack and/or destruction by microorganisms.
  • WPC wood-plastic composites
  • Such a mixture is also effective against important fungal genera, such as, for example, Alternaria, Ulocladium and Phoma .
  • the combinations of TBZ with IPBC moreover meet the requirements for the protection of WPC from Ascomycetes and Deuteromycetes.
  • biocidal mixture contains the active substances IPBC and TBZ in a ratio of 1:99 to 99:1, preferably in the ratio of 20:80 to 80:20 and very particularly preferably in the ratio of 30:70 to 70:30.
  • the biocidal mixture contains a lubricant.
  • the statements regarding the lubricant which have already been made for the biocidal composition are also applicable here. It is preferable if the biocidal mixture consists of more than 90% by weight, preferably more than 95% by weight, of IPBC, TBZ and optionally further biocidal active substances and lubricant.
  • the biocidal mixture consists of more than 90% by weight, preferably more than 95% by weight, of IPBC, TBZ and lubricant.
  • biocidal mixture which has a proportion of borate (measured as B 2 O 3 ) of less than 0.1% by weight, in particular less than 0 05% by weight, especially less than 0.01% by weight, is furthermore preferred.
  • the biocidal mixture can also be used in combinations with further fungicides against wood-destroying Basidiomycetes and/or insecticides and/or algicides. Those already mentioned above are suitable as such.
  • the biocidal mixture additionally contains a conductivity improver (e.g. graphite) with a content of up to 5% by weight, preferably with a content of up to 3% by weight and very particularly preferably with a content of up to 2.5% by weight is likewise preferred.
  • a conductivity improver e.g. graphite
  • the biocidal mixture used is preferably present as a particulate solid preparation or in the form of a solution or dispersion of the biocidal mixture in a polymer matrix (masterbatch below).
  • the particulate solid preparation may be present as powder or granules. It is preferably present in a freely flowable form.
  • the primary particles for the solid preparation preferably have a particle size of not more than 500 ⁇ m, preferably less than 100 ⁇ m, very particularly preferably less than 50 ⁇ m.
  • the solid preparation preferably has a mean particle size, determined from the mass distribution, of 50 to 5000 ⁇ m, preferably 100 to 2000 ⁇ m, in particular 100 to 500 ⁇ m.
  • the masterbatch is preferably characterized by a polymer, preferably one selected from the group consisting of PVC, PET, fluoropolymer, HDPE, LDPE, LLDPE, PP, HDPP, LDPP, WHMWPE, MPE or a mixture thereof and TBZ, optionally lubricant and optionally further active substances and optionally further additives.
  • a polymer preferably one selected from the group consisting of PVC, PET, fluoropolymer, HDPE, LDPE, LLDPE, PP, HDPP, LDPP, WHMWPE, MPE or a mixture thereof and TBZ, optionally lubricant and optionally further active substances and optionally further additives.
  • the masterbatch itself is also a subject of the invention and preferably contains from 20 to 99% by weight of polymer, in particular 40 to 70% by weight, and 1 to 80% by weight of TBZ and IPBC, in particular 30 to 60% by weight.
  • the invention furthermore relates to a process for the preparation of the masterbatch according to the invention, which is characterized in that
  • the polymer swollen in a solvent is mixed with a solution of the biocidal mixture containing TBZ and IPBC, and the solvents of the common mixture are removed, preferably by distillation.
  • the invention furthermore relates to a process for the production of a wood-plastic composite (WPC), characterized in that wood particles, a thermoplastic polymer and a biocidal mixture containing TBZ and IPBC are mixed with thermal energy, in particular extruded or injection moulded.
  • WPC wood-plastic composite
  • the two-stage processes derived from plastics technology are preferably used for the production of wood-plastic composites.
  • granules of thermoplastic polymer, wood and various additives are first prepared, for example by using heating-cooling mixers, and are then processed to give the actual shaped articles, for example by extrusion or injection moulding.
  • the invention furthermore relates to wood-plastic composites (WPC) containing thermoplastic polymer and wood particles, characterized in that it contains TBZ and IPBC.
  • WPC wood-plastic composites
  • % ⁇ data denote % by weight.
  • test specimens having the dimensions 5 cm ⁇ 5 cm were cut from the strips produced analogously to Example 1.
  • the test specimens were subjected to stress by leaching by storage in water with continuous change of water (120 h; 20° C.; flow rate 12 l/h).
  • the samples stored in water as well as those not stored in water were placed on a malt extract nutrient medium and, after inoculation, were cultivated for a period of 3 weeks at a temperature of 26° C.
  • the inoculations used had the following microorganisms: Penicillium funiculosum, Chaetomium globosum, Gliocladium virens, Paecilomyces variotii and Aspergillus niger.
  • Penicillium funiculosum was effected: Penicillium funiculosum, Chaetomium globosum, Gliocladium virens, Paecilomyces variotii and Aspergillus niger.

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US12/597,241 2007-04-27 2008-04-17 Active ingredient formulations containing 2-thiazole-4yl-1h-benzoimidazol (thiaben-dazole or tbz) for the production of wpc Abandoned US20100330185A1 (en)

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DE102007020450.9 2007-04-27
DE102007020450A DE102007020450A1 (de) 2007-04-27 2007-04-27 Wirkstoff-Formulierungen zur Herstellung von WPC mit antifungischen Eigenschaften sowie WPC mit antifungischen Eigenschaften
PCT/EP2008/054661 WO2008132060A1 (de) 2007-04-27 2008-04-17 2-thiazol-4yl-1h-benzoimidazol (thiabendazol oder tbz) haltige wirkstoff-formulierungen zur herstellung von wpc

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WO2018020485A1 (en) 2016-07-29 2018-02-01 3 Spare Sp. Z O.O. Wpc containing particle board dust, a method of manufacture and use thereof
US9951205B2 (en) 2012-03-28 2018-04-24 Lanxess Deutschland Gmbh Stable compositions of thiabendazole and iodine-containing fungicides
US20190322123A1 (en) * 2017-01-01 2019-10-24 Advanced Environmental Recycling Technologies, Inc. Methods for coating composite articles

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CA2522969A1 (en) * 2003-04-23 2004-11-04 Ciba Specialty Chemicals Holding Inc. Natural products composites
DE102009057206B3 (de) * 2009-11-27 2011-09-01 Technische Universität Dresden Lignozelluloser Faserwerkstoff, naturfaserverstärkter Kunststoff und Verfahren zur Herstellung
JP5529831B2 (ja) * 2010-12-22 2014-06-25 ダウ グローバル テクノロジーズ エルエルシー グリホサート化合物とｉｐｂｃとの相乗的組み合わせ
JP5529833B2 (ja) * 2010-12-22 2014-06-25 ダウ グローバル テクノロジーズ エルエルシー グリホサート化合物とｄｍｉｔｓとの相乗的組み合わせ
JP5511093B2 (ja) * 2010-12-22 2014-06-04 ダウ グローバル テクノロジーズ エルエルシー グリホサート化合物とｔｂｚとの相乗的組み合わせ
AT12874U1 (de) * 2011-11-30 2013-01-15 Extruwood Gmbh Verbundprofil aus holz und holzfaserverstärktem kunststoff und verwendung eines derartigen profils
CN103351632B (zh) * 2013-06-20 2016-04-20 黄山华塑新材料科技有限公司 一种防白蚁型木塑复合材料及其制备工艺
WO2017137157A1 (de) 2016-02-12 2017-08-17 Thor Gmbh 2-n-octylisothiazolin-3-on und 4,5-dichlor-2-n-octylisothiazolin-3-on haltige zusammensetzung zur herstellung von wpc
JP6524433B2 (ja) * 2017-06-07 2019-06-05 住化エンバイロメンタルサイエンス株式会社 木材用抗菌組成物

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US9951205B2 (en) 2012-03-28 2018-04-24 Lanxess Deutschland Gmbh Stable compositions of thiabendazole and iodine-containing fungicides
WO2018020485A1 (en) 2016-07-29 2018-02-01 3 Spare Sp. Z O.O. Wpc containing particle board dust, a method of manufacture and use thereof
US20190322123A1 (en) * 2017-01-01 2019-10-24 Advanced Environmental Recycling Technologies, Inc. Methods for coating composite articles

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CA2685011A1 (en) 2008-11-06
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JP5080639B2 (ja) 2012-11-21
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CA2685011C (en) 2013-06-11
BRPI0810681A2 (pt) 2014-10-07
EP2144500B1 (de) 2017-02-22
ZA200907521B (en) 2011-06-29
CN101686663A (zh) 2010-03-31
AU2008244387B2 (en) 2011-09-29
JP2010525011A (ja) 2010-07-22
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WO2008132060A1 (de) 2008-11-06

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